Amateur Data Interchange Format (ADIF) is an open standard for the exchange of data between various amateur radio software packages from different vendors. For example, it allows for the import and export of data between various logbook programs.
These changes from the previous version may necessitate application code or data changes:
Addition of the FST4 submode to the MFSK mode in the Mode and Submode Enumerations.
Addition of the 5m and 8m bands to the Band Enumeration.
Addition of ARRL-10-GHz and WW-DIGI to the Contest-ID Enumeration.
(Released ADIF Version 3.1.1, updated 2020/09/02)
While this in itself is a small step, it is part of the process of having 5m & 8m accepted as new amateur radio bands.
(Thanks to Gintas, LY2YR for the heads up on this)